Adopting the broadside coupled line for the design of an impedance transformer
Menghan Chen, Chuandong Tang, T. Hou, Jichao Wu · 2011 IEEE MTT-S International Microwave Symposium · 2011
Summary form only given, as follows. A compact impedance transformer with a broadside coupled line is provided in this paper. With the assistant of the proposed broadside coupled line, the electrical length of the impedance transformer would be smaller than a quarter wavelength. In addition, analytic equations for the design of complex impedance transformer are derived; the optimal characteristic impedance and transformation ratio for successful power transfer are calculated as well.